<template>

  <div class="login-container">
    <!-- 标题导航栏 -->
    <!-- 导航栏 -->
    <van-nav-bar
      class="page-nav-bar"
      title="登录"
    >
      <!--增加如下-->
      <van-icon
        slot="left"
        name="cross"
        @click="$router.back()"
      />
    </van-nav-bar>
    <van-form
      ref="loginForm"
      @submit="onSubmit"
    >
      <van-field
        v-model="user.mobile"
        type="number"
        name="mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        maxlength="11"
      >
        <i
          slot="left-icon"
          class="toutiao toutiao-shouji"
        ></i>
      </van-field>
      <van-field
        v-model="user.code"
        type="number"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        maxlength="6"
      >
        <i
          slot="left-icon"
          class="toutiao toutiao-yanzhengma"
        ></i>
        <template #button>
          <van-count-down
            v-if="isCountDownShow"
            :time="1000*60"
            format="ss s"
            @finish="isCountDownShow=false"
          />
          <van-button
            v-else
            class="send-sms-btn"
            round
            size="small"
            type="default"
            @click="onSendSms"
            native-type="button"
          >发送验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button
          class="login-btn"
          block
          type="info"
          native-type="submit"
        >登录</van-button>
      </div>
    </van-form>

  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'
export default ({
  name: 'LoginIndex',
  components: {},
  props: {},
  data () {
    return {
      isCountDownShow: false,
      user: {
        mobile: '',
        code: ''
      },
      userFormRules: {
        mobile: [{
          require: true,
          message: '手机号不能为空'
        }, {
          pattern: /^1[3|5|7|8]\d{9}$/,
          message: '手机号格式不正确'
        }],
        code: [{
          require: true,
          message: '验证码不能为空'
        }, {
          pattern: /^\d{6}$/,
          message: '验证码不正确'
        }]
      }

    }
  },
  computed: {},
  watch: {},
  created () { },
  mounted () { },
  methods: {
    // 登录方法
    async onSubmit () {
      const user = this.user

      // 加载提示
      this.$toast.loading({
        message: '加载中...',
        forbidClick: true, // 禁用背景点击
        duration: 0
      })
      try {
        const { data } = await login(user)
        this.$toast.success('登录成功')
        this.$store.commit('setUser', data.data)
        this.$router.back()
      } catch (err) {
        if (err.response.status === 400) {
          this.$toast.fail('手机号或验证码错误')
        } else {
          this.$toast.fail('手机号或验证码错误')
        }
      }
    },
    // 发送验证码方法
    async onSendSms () {
      try {
        await this.$refs.loginForm.validate('mobile')
        console.log('验证通过')
      } catch (err) {
        console.log('验证失败', err)
      }
      this.isCountDownShow = true
      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        // 发送失败关闭倒计时
        this.isCountDownShow = false
        if (err.response.status === 429) {
          this.$toast('发送太频繁,请稍后重试')
        } else {
          this.$toast('发送失败,请稍后重试')
        }
      }
    }
  }
})
</script>

<style scoped lang="less">
.login-container {
  .toutiao {
    font-size: 37px;
  }
  .send-sms-btn {
    background-color: #ededed;
    width: 152px;
    height: 46px;
    line-height: 46px;
    font-size: 22px;
    color: #666;
    padding: 0;
  }
  .login-btn-wrap {
    margin: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
    }
  }
}
</style>
